4531945 has 32 divisors (see below), whose sum is σ = 6500736. Its totient is φ = 2995200.

The previous prime is 4531939. The next prime is 4531949. The reversal of 4531945 is 5491354.

It is not a de Polignac number, because 4531945 - 2¹¹ = 4529897 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4531949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34530 + ... + 34660.

It is an arithmetic number, because the mean of its divisors is an integer number (203148).

Almost surely, 2^4531945 is an apocalyptic number.

It is an amenable number.

4531945 is a deficient number, since it is larger than the sum of its proper divisors (1968791).

4531945 is a wasteful number, since it uses less digits than its factorization.

4531945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201.

The product of its digits is 10800, while the sum is 31.

The square root of 4531945 is about 2128.8365367026. The cubic root of 4531945 is about 165.4861085507.

It can be divided in two parts, 4531 and 945, that added together give a square (5476 = 74²).

The spelling of 4531945 in words is "four million, five hundred thirty-one thousand, nine hundred forty-five".